Cuban made his opinion clear in a video he posted to YouTube (see below) last week in which he criticized Power Balance bracelets before throwing the display case that was in the Mavericks’ locker room in the garbage.

The NBA declined comment Monday afternoon.

The rubber bracelets have a distinctive hologram that is “based on Eastern philosophies of health and wellness,” according to the company’s website. Power Balance bracelets featuring NBA team logos in the hologram are available for $32.99 on the league’s official website.

However, Cuban said via email Monday that he will not allow the product in the Mavs’ locker room.